Safety valving for cargo tanks used for bulk transportation of h

Fluid handling – Control by change of position or inertia of system – Vent opening or closing on tipping container

Patent

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Details

1374938, 1375121, 1375123, 220204, F16K 1736

Patent

active

045081310

ABSTRACT:
Safety valving for cargo tanks used for bulk transportation of hazardous commodities, such as for instance flammables. The valving provides automatic differential pressure relief for the tank, and overturn protection, with the automatic differential pressure relief including port means in the housing for the valving, adapted for communicating the interior of the associated tank with the exterior atmosphere, and comprising poppet type closure means coacting with the port means and biased to normally closed condition, but being openable to provide automatic differential pressure relief. The overturn protection section comprises an angle responsive closure means responsive to predetermined angular orientation of the valving relative to the vertical, and operative to close the associated port means of the valving against inadvertent escape of the tank's contents, when the tank is at least in partially overturned position. The angle responsive closure means includes downwardly converging side walls on the valving housing adapted for guiding coaction with a movable closure member coacting with the converging side walls and having side wall surfaces formed generally complementary to the converging side walls whereby the closure member is urged by gravity into closed position relative to the associated port means if the valving is displaced into said predetermined angular orientation.

REFERENCES:
patent: 1301993 (1919-04-01), Angell
patent: 2074329 (1937-03-01), Gieseman
patent: 2783913 (1957-03-01), DeFrees
patent: 3302658 (1967-02-01), DeFrees
patent: 3568695 (1971-03-01), DeFrees

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